银纳米粒子
自噬
光催化
化学
肺
液泡
毒性
生物物理学
纳米毒理学
纳米材料
纳米技术
材料科学
微生物学
细胞生物学
纳米颗粒
细胞凋亡
生物
生物化学
医学
催化作用
有机化学
细胞质
内科学
作者
Xiaoquan Huang,Congcong Li,Tingting Wei,Na Liu,Lin Zou,Changcun Bai,Yongshuai Yao,Zhihui Wang,Xue Yang,Tianshu Wu,Ting Zhang,Meng Tang
标识
DOI:10.1016/j.scitotenv.2023.165875
摘要
The controlled synthesis of silver nanoparticles (AgNPs) decorated TiO2 nanohybrids (Ag/TiO2) for photocatalysis has received considerable attention. These photocatalysts are widely used in environment and energy, resulting in human exposure through inhalation. Pure TiO2 is generally considered a low-toxic nanomaterial. However, little is known about the toxicity after AgNPs loading. In this study, silver-decorated TiO2 nanohybrids were controllably synthesized by the photodeposition method, and their toxic effects on murine lung and human lung epithelial cells were explored. As a result, silver loading significantly enhanced the effect of TiO2 photocatalyst on EMT in lung epithelial cells, potentially acting as a pro-fibrogenic effect in murine lung. Meanwhile, the increase in autophagy vacuoles, LC3-II marker, stub-RFP-sens-GFP-LC3 fluorescence assay, and LC3 turnover assay showed that silver loading also significantly increased autophagy flux. Furthermore, analysis of autophagy inhibition by 3-Methyladenine indicated that the promotion of EMT by silver loading was related to the increased autophagy flux. Intriguingly, the autophagy and EMT biological effects could be alleviated when the silver loading amount was reduced or silver particle size was increased, and the enhanced pro-fibrogenic effect was mitigated at the same time. This study supplemented safety information of Ag-decorated TiO2 nanohybrids and provided methods of controlled synthesis for reducing toxicity.
科研通智能强力驱动
Strongly Powered by AbleSci AI